模拟电路轨迹编码方法的研究及改进

Stduy and Improvement of Analog Circuit Trail Encoding Method

阐述一种轨迹编码的改进方法。在模拟电路演化设计中,轨迹编码方法作为一种典型的电路编码方法,它的染色体表示简洁,并且在演化过程中不易产生非法电路个体。然而轨迹编码能表示的电路结构有限。提出一种轨迹编码的改进方法,在原先单一元件连接的基础上,加入组合电路连接到电路中。改进方法丰富了轨迹编码表示的电路结构,扩充了轨迹编码的设计搜索空间,提高了轨迹编码染色体的编码效率。实验结果表明,改进方法相较于轨迹编码方法,在相同的设计任务和演化算法上,电路设计速度和设计成功率均有所提升。

This paper describes an improved method of the trail encoding.In the evolutionary design of analog circuits,the trail encoding method is a typical circuit coding method.Its chromosome is concise and does not produce illegal circuit individuals easily during the evolution process.However,the circuit structure that can be represented by trail encoding is limited.An improved method of trail encoding is proposed in this paper,which adds a combination circuit for connection operations based on the original single component connection.The improved method enriches the circuit structure that trail encoding can represent,expands the design search space of trail encoding,and improves the encoding efficiency of trail encoding chromosomes.The experimental results show that compared to the trajectory encoding method,the improved method in this paper has improved design speed and success rate under the same design task and evolutionary algorithm.